Backend code is the part of a website or application that isn’t visible to the user. The code is a behind-the-scenes part of development, requiring a high level of competency regarding coding and the server that is being used. A backend developer works on the implementation and configuration of systems, and thus provides the building blogs for a website or program.

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    На сайте , конкретно на страницах каталога, таких как есть проблема обработки и хранения кук в браузере Chrome. При выборе количества элементов на странице, смене фильтра или вида каталога ничего не происходит пока принудительно не почистишь куки браузера. На основном сайте такого не наблюдается. В других браузерах, например FireFox, Opera, Yandex и т.д. такой проблемы не обнаружено. Требуется решить эту проблему, чтобы пользователи могли пользоваться всеми функциями сайта. Прошу в отклике на задачу указать предполагаемую причину, мы рассмотрим ответ и вернёмся с обратной связью.

    $425 (Avg Bid)
    $425 Ср. заявка
    2 заявок(-ки)

    We are looking for Individuals who have skills in Front end UI and Backend coding. We need someone who knows the esthetics of websites and web applications with new trends and tech over implementation and can work on challenging projects.

    $585 (Avg Bid)
    $585 Ср. заявка
    17 заявок(-ки)

    Goodday all, We are looking for an expert illustrator to make a background for our new website. It's a one-pager with the following requirements: - Night time need to be the topic together with real estate of in an island style (appartments). - In the top we would like to see the air, stars, appartments in the background. When you scroll down i would like to see the beach, the sand and then the entry towards the dark sea, i have some 2d images that we can integrate. Would be great if we can animate those, bubbles in the sea, some small fish. Would love to see some mysterie in this page. On the base we could integrate a hidden treasure or something. We would like to see some creative persons working on this. We have 5 days to finish it. Thank you.

    $470 (Avg Bid)
    $470 Ср. заявка
    12 заявок(-ки)
    Backend for mobile app 6 дней(-я) left

    Backend needs to be built using specialist skills

    $372 (Avg Bid)
    $372 Ср. заявка
    24 заявок(-ки)

    The name of my brand is Lifestyle and Options. I offer luxury and exotic rental cars as well as a 70 ft luxury yacht. I need a booking site that highlights the vehicles as well as looks nice. the site and company I model my business after is MPH Club in south Florida. Their website is They have way more vehicles than I do but I will grow and expand soon enough and will be able to offer those options as well. I have a logo already for Lifestyle and Options, but, I am interested to see if someone could create a logo WITHOUT the words. The rental company offers luxury cars, suv's and a 70' luxury yacht. I also have rent out million dollar mansions for private events as well as over night stays.

    $763 (Avg Bid)
    $763 Ср. заявка
    33 заявок(-ки)

    I'm a sole frontend developer working on a "site builder" like application. ​ At the moment, users can create "sites" and host them on a subdomain "*." (All subdomains are stored on a Postgres database with a Graphql backend). The app is hosted on Vercel and is linked to a wildcard domain. The subdomain is then parsed from the host on the frontend and used for requests. Now I'd like users to add their own purchased domains to my site, but I have no idea how to go about this. So I need someone to help me set this up, and ensure that the domains are secured with SSL. I also realize that Vercel most likely can't support my use case, so I'd also need guidance in finding a tech stack that fits my needs.

    $290 (Avg Bid)
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    4 заявок(-ки)

    Deseo un software que me perimita comercializarlo sin miedo a que pueda ser clonado crackeado con licencias unicas y que pueda ser quien haga la activacion mostradole una pequeña demo al cliente con restricciones dirigido negocios de servicio tecnico ya sea celular, computacion o electronica, el fin es que las personas puedan obtener el sistema y personalizarlo con los datos de su empresa sin importar en que parte de latino america este se puedan personalizar algunos datos fiscales, el fin es poder organizar las ordenes de reparacion entradas y salidas por marca modelo y descripcion se pueda imprimir hoja de servicio para el cliente y para la organizacion del talle el sistema a realizar es basado en un software que poseo y use una vez

    $152 (Avg Bid)
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    10 заявок(-ки)
    Creation of an online casino backend 5 дней(-я) left

    I am looking for a developer who is able to create a backend for my online casino site. Attached I leave you a test backend from which to take inspiration, my backend must have the same functions as this one. Username: MRNGRG Password: 123456

    $612 (Avg Bid)
    $612 Ср. заявка
    26 заявок(-ки)

    I have a wordpress plugin which is using domPDF to generate pdf files. The issue is that the Arabic text is not being generated correctly because it doesn't support arabic. This library (ar-PHP) solves the issue and i would like to use it as per the below example This is a detailed explanation of how we can use ar-PHP library with domPDF. However the above explanation is old new version of AR-PHP was released to be compatible with PHP 7 So now i need someone who can understand what should be done from the above links and do it using the new release. Task needs to be done within the next hour.

    $21 (Avg Bid)
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    4 заявок(-ки)
    Caladex (DEX part of Exchange) 4 дней(-я) left

    We just deleted this project and are posting again, this time against an hourly rate. Time to complete project is max 35 days and we request developer to work on this 40 hours per week

    $36 / hr (Avg Bid)
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    28 заявок(-ки)
    mobile application with Admin Panel to manage 4 дней(-я) left

    Note : If you have readymade script then its best Digital Poster Creator with Admin Panel with all the features that is available in that application Please check the app and what function you can provide in the Backend needed as well. Give the Best Quote for this Admin task 1. Manage users 2. Manage packages 3. Upload Frames, Images, Post 4. Payment Integration for a subscription plan 5. Sales Tracker 6. Create Groups ( for frames or posts ) 7. Anything left for managing Users, Groups, Account, Payment gateway, Post, Images, Frames has to be done by default users task 1. Download 2. Install 3. Signup / login 4. Choose packages 5. Logo, name, address, phone no , emailed, WhatsApp , social media icons, sticker, emojis or any text they want can add on post or images. 6. Render , downlo...

    $331 (Avg Bid)
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    21 заявок(-ки)

    En No Limits Design estamos en búsqueda de contar con una cartera de programadores en Laravel, ya sean SSr o Sr para posibles futuros desarrollos. Requisitos Excluyentes, contar con: -Experiencia mínima 2 años de desarrollo -Manejo de base de datos / eloquent ORM -Desarrollo de backend -Seguridad de datos -Utilización plantillas: Blade Todas las especificaciones anteriormente punteadas, refieren a Laravel. Se espera -Desarrollo de módulos a medida -Trabajo en equipo -Residencia: Argentina Esperamos tu postulación!

    $2520 (Avg Bid)
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    24 заявок(-ки)
    TPV online - Web para tienda - POS Point of Sale System 3 дней(-я) left

    Necesito un presupuesto para crear un TERMINAL DE PUNTO DE VENTA (TPV) La idea es cobrar desde alguna pagina web a los clientes que nos entren en la tienda, que se guarde todo en la nube y podamos acceder con usuario y contraseña, deje una captura de un programa parecido

    $357 (Avg Bid)
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    22 заявок(-ки)
    php Laravel developer needed -- 2 3 дней(-я) left

    Hello all, We are looking for a php laravel experienced web developer to develop/fix a job portal platform. The platform is almost ready, but some of the required features don't work perfectly. Those must be fixed and some new required features must add. The project concern to back-end and front-end development and also testing the platform. I will review you bid and contact your personally with the full project documentation for you to review in

    $1140 (Avg Bid)
    $1140 Ср. заявка
    189 заявок(-ки)
    Back-End Web Developer - IV -- 2 2 дней(-я) left

    We are looking for a back-end web developer to help with website integration, web services, and APIs. Candidates should have some or most of the following skills and experience: - Fluent in scripting languages (e.g., PHP, .Net, C#, Java, or others) - Experience with Go, Laravel, Django, Express, or other frameworks - Experience with SQL and MySQL database systems - Version control (Git) - Knowledge and experience with compliance and data security - Good problem-solving skills and analytical thinking - High attention to detail - Excellent communication - Ability to work well with a team Send us links to samples of your work.

    $12 / hr (Avg Bid)
    $12 / hr Ср. заявка
    15 заявок(-ки)
    Cloud based Asset Management Software 2 дней(-я) left

    Looking for an expert-level Full Stack Developer. Requirements: - Solid experience in building responsive custom software quickly and efficiently - Proven work experience as a full-stack software developer (please submit samples of your prior work when applying) - Knowledge of front-end and backend technologies - Understanding of database design and architecture - Experience with AWS/Azure - Knowledge of code versioning tools such as Git - Experience working with debugging tools such as Chrome Inspector and Firebug - Good understanding of website architecture and aesthetics - Ability to manage projects - Good communication skills & fluency in English - Mobile App Development - Secure API The project consists of creating a Asset management suite similar to AssetTiger and Reftab. We ar...

    $2462 (Avg Bid)
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    60 заявок(-ки)
    Find super web developer 2 дней(-я) left

    Create a new large-scale company website. This site has several features. We need design, frontend and backend developers.

    min $50 / hr
    min $50 / hr
    21 заявок(-ки)

    Looking for an expert-level Full Stack Developer. NOTE: We are looking for someone who can work in our timezone in North America. South/North American candidates preferred. Requirements: - Solid experience in building responsive custom websites quickly and efficiently - Proven work experience as a full-stack web developer (please submit samples of your prior work when applying) - Knowledge of front-end technologies including CSS3, JavaScript, HTML5, and jQuery - Experience in WordPress - Understanding of database design and architecture - Experience with AWS - Knowledge of code versioning tools such as Git - Experience working with debugging tools such as Chrome Inspector and Firebug - Good understanding of website architecture and aesthetics - Ability to manage projects ...

    $20 / hr (Avg Bid)
    $20 / hr Ср. заявка
    169 заявок(-ки)
    Hackathon. 2 дней(-я) left

    I am looking for someone who has experience in hackathons and had successful results. If you would like more information, please contact me.

    $566 (Avg Bid)
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    10 заявок(-ки)
    Node Js Full time freelancer Needed 2 дней(-я) left

    The developer must have worked with Node js , Websocket and webrtc before.

    $520 (Avg Bid)
    $520 Ср. заявка
    11 заявок(-ки)
    Back-End Development 1 день left

    Need a backend engineer or full stack engineer who can provide long term software support for API development. Pair Programming could be done as well. Great opportunity to learn & sharpen skills in field of API development. Key requirement is to build end-to-end API's. Required Tech Stack :: Python Flask MongoDB Docker Kubernetes Git Commands

    $117 (Avg Bid)
    $117 Ср. заявка
    14 заявок(-ки)
    WEB APP tipo link tree 1 день left

    Necesito alguien que me desarrolle una web app parecida a link tree, que la primera vez que se acceda al link madre sea para crear una cuenta con pin para almacenar los links, y una vez que la cuenta este guardada después ese link sea el perfil con los links

    $28 (Avg Bid)
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    3 заявок(-ки)

    Dear Candidate, We are a team of highly skilled entrepreneurs, technologist and banking experts on a mission to launch the next-gen of payment app in the UK. We are building our foundation MVP platform using external ‘banking-as-service' and open-banking API’s to goto market really fast. What we are looking for: An expert backend engineer with minimum 5+ years of hands-on experience in building backend services for mobile and web platform. Prior experience of working with payments/wallet/banking application would be ideal. Where we are now: We have completed the requirement gathering and design phase. All key technical requirements/user stories are logged in JIRA. Front-end development for native mobile app has already started using flutter. Key journeys in scope are...

    $2229 (Avg Bid)
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    62 заявок(-ки)
    Apps development and maintenance 1 день left

    We need a developer to work in 2 projects: 1.- To develop an e-commerce app and 2.- to maintain and improve a task management app (plus its web interfaces) I prefer to work directly with the developer and not with companies or agencies, but it is not required. We will ask you to develop or fix different features or bugs in both apps You are going to be paid through by hour, therefore you should use its time tracker in order to be paid The developer should follow the directions of the product owner (me) regarding WHAT should be done, and the directions of my developer , regarding HOW to develop it. We will have weekly zoom meetings, a whatsapp group, plus the use of a task management app, to have a good communication between us. If you speak spanish is a plus but ...

    $19 / hr (Avg Bid)
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    148 заявок(-ки)
    Need a Cross Platform MVP with Firebase Backend 1 день left

    I am looking to develop an e-commerce cross-platform application with firebase as the backend. The application will be part of our MVP roadmap. Project Crux - Cross-Platform, API Integration with Firebase, Delivery Module, GeoLocation

    $1083 (Avg Bid)
    $1083 Ср. заявка
    19 заявок(-ки)
    Backend Direct Developer for IOS and Android 1 день left

    Need a direct backend developer for iOS and Android to fix server issue. Phone iOS to iOS calls aren’t working. Android to iOS isn’t working with agora

    $374 (Avg Bid)
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    29 заявок(-ки)

    i went system like truepush or somthing like this larapush, i just tired of paying push services ? now i want a self hosted webpush service of my own server please help me, i hired developer earlier he did what i wanted, in 5000 rupees he give me a control panel and plugin, Where I was easily adding my wordpress website, the script is working well but the problem is that there are many shortcomings in that script like notification block in incogonito tab and chrome descktop also tells notification block And shows the same to the subsriber of 2 different websites, I told the developer about this but now he is not responding to any of my questions

    $113 (Avg Bid)
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    5 заявок(-ки)

    - A mobile application is used to fill out a form. - Arabic Language. - Application in Flutter (any "Backend" programming language, suggested and then approved). - Compatible with Google Play Store + Apple Store + Huawei - Submitting the requirements for implementing the work and submitting it to the stores, such as (the requirements of the stores, the required hosting features, and the methods of linking to text messaging companies .. etc.) - Test the application before uploading it to ensure that there are no hidden errors or the ability to enter the application without a permit and to ensure that the application can accommodate large numbers of users and is not exposed to a defect due to large numbers or the momentary use of a large number of the application at the same time. ...

    $97 (Avg Bid)
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    10 заявок(-ки)

    Our project is about the application which can communicate with between celebs and their fans. The job is a developing server side as REST API to the Flutter app front part. Hope to get json info from a back-end services, we will do the front part with Flutter. > only need login function added Feel free to ask much explanation about this project and send me a quotation thanks.

    $161 (Avg Bid)
    $161 Ср. заявка
    7 заявок(-ки)

    Bottomline Thermals is looking for skilled visionaries to path the way forward into the crowded PC customization market. This project will host various talented people from the freelancer network to help achieve this goal. The workshop--a term coined for the development of a system that would create and allow customers to design their perfect computer. We will break the current product configurator norms and create an entirely new experience. What is Bottomline Thermals? This company is providing a powerful configurator that designs PCs for everyday consumers. Bottomline Thermals would offer in-depth customization through our website. There are not many companies using technology to give their consumers exactly what they want. This project aims to let the consumer design their own p...

    $39665 (Avg Bid)
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    39 заявок(-ки)
    Wordpress website development 8 часов(-а) left

    Further development and optimisation of existing Wordpress website.

    $26 / hr (Avg Bid)
    $26 / hr Ср. заявка
    89 заявок(-ки)
    Make Node JS backend, with API connectivity, to existing front-end 6 часов(-а) left

    Hi, 1. Only developers who are not occupied with other projects need to bid. 2. Super fast delivery needed, not in weeks, but in days. Form with Email verify & oAuth ( Google, FB, LinkedIN ) based Signup Mobile OTP based Login, alongwith normal Login Admin Panel as per Wireframes ( will be provided ) App modules in 3 phases, which roughly comprises of : Video uploads with tagging & needed parameters Video viewing & responding by Users ( 3 response methods ) 3 response methods,as in APP UI ( Video recording & upload, Audio recording & upload, Typing text ) All images & data coming through Back-end in App Speech to text API coding ( Phase-1 will use Google Speech to Text & Vice versa API ) Calculating result, as per algorithm provided ( comparison to 4 text lib...

    $399 (Avg Bid)
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    9 заявок(-ки)
    API integration in Flutter 5 часов(-а) left

    I have the front-end of a mobile app fully done. It is a fantasy app. I need someone to find a proper API to calculate the odds, and everything required to make it playable, and deal with the integration. I will give more instructions via chat

    $195 (Avg Bid)
    $195 Ср. заявка
    28 заявок(-ки)

    I am looking to develop an e-commerce cross-platform application with firebase as the backend. The application will be part of our MVP roadmap Project Crux - Cross-Platform, API Integration with Firebase, Delivery Module, GeoLocation

    $379 (Avg Bid)
    $379 Ср. заявка
    15 заявок(-ки)
    Need a Backend Developer -- 2 1 час left

    Position: Backend Developer Experience: 1-3 years Skills: PHP and Laravel (BOTH are must) for backend and also API's part should be very strong. Budget: 10-15K

    $138 (Avg Bid)
    $138 Ср. заявка
    23 заявок(-ки)

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